Problem Solving; Faults And Remedies - Atlas Copco ZT 55 Instruction Book

Instruction book
8

Problem solving

8.1

Faults and remedies

Warnings
Problem solving, compressor
Condition
Compressor capacity or working
pressure lower than normal
Oil pressure too low
Air temperature above normal
Condensate is not discharged
from condensate traps during
operation
LED's of electronic water drain do
not light up
No condensate discharged when
pressing test button on EWD
APFS998935v00
• Before starting any maintenance or repairs, stop the compressor, wait until it has
stopped.
Close the air outlet valve and press the test button on top of the electronic water drains
•
to depressurize the air system.
• Open the isolating switch (customer's installation) to switch off the voltage to the
compressor.
• Apply all relevant "Safety
Fault
Air consumption exceeds capacity
of compressor
Safety valves leaking
Oil level too low
Oil filter clogged
Inlet temperature too high due to
bad room ventilation or
recirculation of cooling air
Air filter clogged
Discharge flexible clogged
Electronic water drain
malfunctioning
Compressor is running unloaded
Power supply to EWD's faulty
Power supply board defective
System pressure lower than 0.8
bar(e)/11.6 psig
Condensate inlet and/or outlet
blocked
Control board defective
Solenoid valve defective
precautions".
Remedy
Check pneumatic plant
Remove leaking valve and have it
inspected
Top up level to the middle of the oil
level sight-glass
Replace filter
Improve ventilation of compressor
room and avoid cooling air
recirculation
Replace filter
Check and correct as necessary
Consult Atlas Copco
LED's will light up when the
compressor is loaded again.
Check power supply. Compare power
supply with voltage mentioned on
data label of EWD
Check and replace as necessary
Load the compressor; as soon as the
system pressure exceeds 0.8 bar(e),
condensate will be discharged
Check and correct as necessary
Check and replace if necessary
Check and replace if necessary
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